IDENTIFIERS
Current Taxon Name (Soil Name):
Poynor
OSD
Series Extent
User Site ID:
1992MO123021M
User Pedon ID:
1992MO123021M
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
MCL
Lab Pedon # -
M9212321
NCSS Pedon Lab Data NASIS Record ID -
31360
Print Date:
5/31/2024
LOCATION
Location In Web Soil Survey
AOI is roughly a square mile and pedon is marked in the center.
Location in SoilWeb
Location in Google Maps
Std. Latitude:
37.3385849
Std. Longitude:
-90.2027740
Datum:
WGS84
Township:
T31N
Range:
R8E
Section:
30
PLSS Details:
2110 feet S and 400 feet W of the NE corner
Location Description:
2110 ft. S. and 400 ft. W. of the NE corner of sec. 30, T. 31 N., R. 8E
Map Unit:
73156—Alred-Gepp complex, 8 to 15 percent slopes, stony57E—Poynor very gravelly silt loam, 14 to 40 percent slopes
State:
Missouri
County:
MO123—Madison
MLRA:
116A—Ozark Highland
Non-MLRA Soil Survey Area:
MO123—Madison County, Missouri
7.5 Minute USGS Quad:
37090-C2—Allbright, Missouri
PEDON
Describers Name:
KEB,MLC,CGM,JB,DH
Current Taxonomic Class:
Loamy-skeletal over clayey, mixed, semiactive, mesic Typic Paleudults
Current Taxon Kind:
taxadjunct
Pedon Type:
within range of map unit
Pedon Purpose:
laboratory sampling site
Pedon Record Orgin:
Converted from PDP 3.x
Correlated Information:
Soil Name -
Poynor
PSC -
37 to 100 cm.
Classificaton Date -
3/28/2011
Moisture Class -
udic
Sampled As Information:
Soil Name -
Poynor
Taxonomic Class -
Loamy-skeletal over clayey, siliceous, semiactive, mesic Typic Paleudults
Taxon Kind -
series
PSC -
37 to 100 cm.
Classificaton Date -
10/22/1992
Dynamic Soil Properties:
Erosion Class -
1
Pedoderm Loose Cover Indicator -
no
Hydric:
no
Field Measured Properties:
26 Strongly contrasting textural stratification (depth in inches)
SITE
Parent Material:
slope alluvium derived from mixed over residuum weathered from mixed
Landscape:
plateau
Landform:
valley side
Runoff:
high
Drainage Class:
well
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
10/22/1992 (actual site observation date)
Air Photo ID:
D-8
Surface Cover Properties:
Site Obs. Cover Kind 1 -
tree cover
Pedoderm Loose Cover Indicator -
no
Drained? -
no
Bedded Soil? -
no
Forest Plantation? -
no
Site Erosion Accelerated:
water erosion
Pedon Diagnostic Features
Feature Kind
Feature Depth L-H
Feature Thickness L-RV-H
cm
ochric epipedon
argillic horizon
1—20
20—155
—-
—-
Setting and Climate
Slope
Slope Length USLE
Upslope Length
Elev.
Corr. Elev
Aspect
MAP
REAP
FFD
MAAT
MSAT
MWAT
MAST
MSST
MWST
MFFP
PE Index
Climate Station ID
Climate Station Name
Climate Station Type
%
m
degrees
mm
mm
C
mm
16
—
—
172
—
80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Oi—0 to 1 centimeters (0.0 to 0.4 inches); slightly decomposed plant material; fragments.
A—1 to 9 centimeters (0.4 to 3.5 inches); brown (10YR 4/3), light brownish gray (10YR 6/2), dry; very gravelly silt loam; weak very fine subangular blocky parts to moderate very fine granular structure; very friable; 3.0 fine and medium roots and 0.5 coarse roots; 43 percent by volume subrounded 2-39-75 millimeter unspecified fragments; moderately acid, pH 5.9, hellige-truog; abrupt wavy boundary. Lab sample # MU045694
E—9 to 21 centimeters (3.5 to 8.3 inches); yellowish brown (10YR 5/4), light yellowish brown (10YR 6/4), dry; gravelly silt loam; moderate very fine subangular blocky structure; very friable; 3.0 fine and medium roots and 0.5 coarse roots; 32 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU045695. Some mixing from above horizon.
Bt1—21 to 37 centimeters (8.3 to 14.6 inches); yellowish brown (10YR 5/4) and brown (7.5YR 5/4) very gravelly silt loam; moderate very fine subangular blocky structure; friable; 0.5 medium and coarse roots and 3.0 fine roots; 35 percent faint clay films; 47 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU045696
Bt2—37 to 57 centimeters (14.6 to 22.4 inches); yellowish brown (10YR 5/4) and brown (7.5YR 5/4) extremely gravelly silt loam; moderate very fine subangular blocky structure; friable; 0.5 medium roots and 3.0 fine roots; 35 percent faint clay films and 35 percent prominent silt coats; 2 percent by volume 75-162-250 millimeter unspecified fragments and 65 percent by volume subrounded 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.2, hellige-truog; abrupt wavy boundary. Lab sample # MU045697
2Bt3—57 to 67 centimeters (22.4 to 26.4 inches); strong brown (7.5YR 5/6) and dark red (2.5YR 3/6) very gravelly silty clay loam; moderate very fine subangular blocky structure; firm; 0.5 fine roots; 15 percent prominent light brown (7.5YR 6/4), dry, silt coats and 35 percent prominent clay films; 37 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog; abrupt wavy boundary. Lab sample # MU045698
2Bt4—67 to 90 centimeters (26.4 to 35.4 inches); dark yellowish brown (10YR 3/6) and strong brown (7.5YR 4/6) and dark red (2.5YR 3/6) gravelly clay; moderate fine angular blocky structure; firm; 0.5 very fine roots; 35 percent prominent clay films; 30 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.6, hellige-truog; gradual wavy boundary. Lab sample # MU045699. Matrix colors are varigated.
2Bt5—90 to 110 centimeters (35.4 to 43.3 inches); dark red (2.5YR 3/6) and strong brown (7.5YR 4/6) clay; moderate fine angular blocky structure; firm; 0.5 very fine roots; 35 percent prominent clay films; 5 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; abrupt wavy boundary. Lab sample # MU045700
2Bt6—110 to 156 centimeters (43.3 to 61.4 inches); dark red (2.5YR 3/6) very gravelly clay; moderate fine angular blocky structure; firm; 0.5 very fine roots; 75 percent prominent clay films; 50 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.5, hellige-truog. Lab sample # MU045701. A large dolomite floater at 51 inches in the western part of the backhoe pit was observed; a few soft siltstone fragments were observed in lower part of the horizon.